vmware esxi disk conversion

In order to use a disk imported from another vmware version, either use vmware converter first, then transfer the machine, or convert the disk and insert it into a new esxi vm.


to do the latter for example

 vmkfstools -i itvmgr41.vmdk -d zeroedthick itvmgr40sp1.vmdk

will convert the disk.  There are other options for the -d parameter, but this will result in a fully allocated disk image with the sparse portions of the original file filled in with zeros.